|Publication number||US7190575 B1|
|Application number||US 11/195,465|
|Publication date||Mar 13, 2007|
|Filing date||Aug 2, 2005|
|Priority date||Aug 2, 2005|
|Publication number||11195465, 195465, US 7190575 B1, US 7190575B1, US-B1-7190575, US7190575 B1, US7190575B1|
|Inventors||David Baik, George Feltovich, Brad Reger, David Willheim|
|Original Assignee||Network Appliance, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (9), Classifications (13), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates generally to hard disk drives, and particularly to a hard disk drive (HDD) system and keying method.
Hard disk drive (HDDs) for a file server or other type of computer are often mounted, in a vertically or horizontally stacked array, in a rectangular sheet metal “cage” structure which may be disposed within the computer housing or externally thereto. For operational convenience and flexibility, each disk drive is typically “hot plug” connected within the cage. This type of electrical connection permits any of the supported disk drives to be removed and re-installed within the cage without disturbing the operation of the other disk drives.
To effect this desirable hot plug connection of each of the disk drives, each disk drive is typically supported on a carrier structure which is slidably and removably insertable into the cage to mate an electrical connector carried on a rear portion of the drive or its carrier structure with a corresponding electrical connector on a back plane circuit board suitably supported at the rear interior side of the cage.
There are various types of HHDs such as SATA (Serial Advanced Technology Attachment) HHDs, PATA (Parallel Advanced Technology Attachment) HHDs, SAS (Serial Attached SCSI) HHDs, FC (Fibre Channel) HDDs, and the like. An increasing problem associated with the carrier support of disk drives removably mounted in cage structures or the like is a mixed mode operation (e.g., when a FC HDD is improperly placed into a receiving slot of a chassis where a SATA/SAS HDD should have been placed) which may cause HDD read/write timing problems, data corruption, and/or data loss.
Thus, it would be desirable to provide a hard disk drive (HDD) system and keying method, which may prevent a mixed-mode operation of HDDs.
In an exemplary aspect of the present invention, a hard disk drive system includes a plurality of hard disk drive carriers and a hard disk drive chassis. Each of the plurality of hard disk drive carriers has a body and an ejector rotatably connected to the body. The ejector includes a first alignment member on a first side of the ejector and a second alignment member on a second side of the ejector. The second side of the ejector is opposite the first side of the ejector. The hard disk drive chassis includes a plurality of receiving slots for receiving the plurality of hard disk drive carriers. Two of the plurality of hard disk drive carriers may be fully inserted, next to each other, into the plurality of receiving slots.
In an additional exemplary aspect of the present invention, a hard disk drive system includes a hard disk drive carrier and a hard disk drive chassis. The hard disk drive carrier has a body and an ejector rotatably connected to the body. The body includes a first alignment member on a first side of the body and a second alignment member on a second side of the body. The first alignment member protrudes from the first side of the body, and the second alignment member protrudes from the second side of the body. The second side of the body is opposite the first side of the body. The hard disk drive chassis includes at least one receiving slot for receiving the hard disk drive carrier. The hard disk drive chassis has a key member coupled to at least one outside wall of the hard disk drive chassis. The key member is suitable for enabling the hard disk drive carrier to be fully inserted into the at least one receiving slot of the hard disk drive chassis.
In another exemplary aspect of the present invention, a hard disk drive keying method includes the following steps. A plurality of hard disk drive carriers is provided. Each of the plurality of hard disk drive carriers includes a body and an ejector rotatably connected to the body. Each of the plurality of hard disk drive carriers has a first alignment member and a second alignment member on its body or its ejector. A hard disk drive chassis is provided. The hard disk drive chassis includes at least one receiving slot for receiving at least one of the plurality of hard disk drive carriers. One of the plurality of hard disk drive carriers is inserted into the at least one receiving slot.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention and together with the general description, serve to explain the principles of the invention.
The numerous advantages of the present invention may be better understood by those skilled in the art by reference to the accompanying figures in which:
Reference will now be made in detail to the presently preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.
The present invention uses mechanical keying devices to prevent mixed-mode operations such as mixing of different drive types (SATA/PATA, FC, SAS, and the like). Keying may be implemented in either horizontal or vertical HDD dividers. Additionally, different color may be used to distinguish different drive types.
Referring generally to
The chassis 102 includes a plurality of receiving slots 120 for receiving the plurality of carriers 104. The chassis 102 has a first outer wall 122 and a second outer wall 124. The second outer wall 124 is at least substantially perpendicular to the first outer wall 122. The first side 210 of the ejector 204 and the second side 212 of the ejector may be at least substantially parallel to the first outer wall 122 of the hard disk drive chassis 102. In order to prevent the mixed-mode operation, the alignment members 206, 208 of the carrier 104 may be built so that only the same type of carriers 104 may be fully inserted, next to each other (either horizontally or vertically), into the plurality of receiving slots 120. This is shown in
Referring now to
The hard disk drive chassis 602 includes at least one receiving slot 620 for receiving the hard disk drive carrier 604. The hard disk drive chassis 602 has a key member 622 coupled to at least one outside wall of the hard disk drive chassis 602. The key member 622 is suitable for enabling the hard disk drive carrier 604 to be fully inserted into the at least one receiving slot 620 of the hard disk drive chassis 602. The key member 622 includes at least one slot 624 for receiving at least one of the first alignment member 610 and the second alignment member 612 so that the hard disk drive carrier 604 may be fully inserted into the at least one receiving slot 620 of the hard disk drive chassis 602. In other words, a specific type of carrier 604 has a matching key member 622 whose slots 624 are suitable for receiving the corresponding alignment members 610, 612. For example, the chassis 602 with a “P” type key member 622 can only receive matching “C” type carriers 604 (see, e.g.,
Those of ordinary skill in the art will understand that the foregoing-described systems 100 and 600 may work together without departing from the scope and spirit of the present invention.
The present invention may have the following advantages. First, it may provide manufacturing flexibility. It uses the same chassis, but with specified keying in the chassis front, to deploy PATA/SATA, SAS, and FC drives, thereby providing maximum flexibility. Moreover, the present invention may prevent one, skilled or not skilled in the art, from installing incorrect HDDs into an established set of HDDs. Additionally, it may increase uptime and provide easy identification of incorrect device. Further, it may prevent possible data corruption or loss caused by the mixed-mode operation (a mixed-mode operation may cause the devices not to function or malfunction, and the malfunctioned devices may lead to data corruption).
It is understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged while remaining within the scope of the present invention. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
It is believed that the present invention and many of its attendant advantages will be understood by the foregoing description. It is also believed that it will be apparent that various changes may be made in the form, construction and arrangement of the components thereof without departing from the scope and spirit of the invention or without sacrificing all of its material advantages. The form herein before described being merely an explanatory embodiment thereof, it is the intention of the following claims to encompass and include such changes.
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|U.S. Classification||361/679.33, 248/682, 312/223.1, G9B/33.026, 360/99.13, 360/98.01|
|Cooperative Classification||H05K7/1455, G11B33/12, G06F1/187|
|European Classification||H05K7/14G4C, G06F1/18S6, G11B33/12|
|Aug 2, 2005||AS||Assignment|
Owner name: NETWORK APPLIANCE, INC., CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAIK, DAVID J.;FELTOVICH, GEORGE;REGER, BRAD;AND OTHERS;REEL/FRAME:016863/0184
Effective date: 20050729
|Sep 13, 2010||FPAY||Fee payment|
Year of fee payment: 4
|Jan 18, 2013||AS||Assignment|
Owner name: NETAPP, INC., CALIFORNIA
Effective date: 20080310
Free format text: MERGER;ASSIGNOR:NETWORK APPLIANCE, INC.;REEL/FRAME:029657/0795
|Sep 15, 2014||FPAY||Fee payment|
Year of fee payment: 8